...but here you just get a new nic.
Actually, I apparently got "busted" by IP address. I had connected to my gym's newly-installed WiFi, and apparently the IP address that the ISP assigned the gym's new Internet account just so happened to have previously belonged to a known scammer, and had been blacklisted by DDF.
So a new nic wouldn't help. But I've heard that some new converts to Judaism get away with it...